John a



(No Model.)

J. A. DEAN. ELEVATOR.

Patented Mar. 29, 1892.

C I (M M 1 a E. M mm." |K K 1 AMP H 7 A a G I. v.0 J u T. 3/ J 1 J E,\ oM L H H Q P a NITED STATES PATENT Orricn.

JOHN A. DEAN, OF IVORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOISAAC S. WVHITING, OF SAME PLACE.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 472,012, dated March29, 1892.

Application filed October 6, 1891. Serial No. 407,833 (No model.)

T0 at whom it may concern.-

Be it known that I, JOHN A. DEAN, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inElevator-Hatches, of which the following is a specification, refer encebeing had to the accompanying drawings, in which Figure 1 represents insectional view two elevator-hatches, together with their connectedactuating mechanism, shown in elevation. Fig.2is a top view of the lowerof the hatches shown in Fig. 1, the guide-posts being shown in sectionalview on line X X, Fig. 1. Fig. 3 represents in side View one of thestationary arcs and vibrating levers which is actuated by the movingcar, and Fig. 4 represents a modified form of the guide-bars.

Similar letters refer to similar parts in the diiterent figures.

My invention relates to certain improve ments in the construction ofelevator-hatches, and alsoto the operating mechanism by which the hatchis raised and lowered by the movement of the car.

In the accompanying drawings, A A denote two vertical guide-posts,between which the car B moves.

0 and D denote the upper and lower floors through which the elevator-carB passes, and which are closed by hatches embodying my invention, thehatches of the floor 0 being represented as open, and those of the floorD as closed.

E represents in section the two folding doors, hinged at E E andarranged to fall into a horizontal position and close the flooropeningor to be raised into a vertical position to allow the passage of the carB. Rigidly attached to the guide-posts A are the seg ments F, andpivoted concentrically with the segments F are the levers G G, the innercurved ends G being arranged when the hatches are closed to enter theelevator-shaft in the path of the moving car. The opposite ends of thepivoted levers G carry studs, upon which turn the scored rolls G2 Gplaced in the planes of the segments F. AchainH has one end attached ateach one to the hatches E, with the opposite end attached to adjustableeyebolt 11*, held in the segment F, the chain H and the eyebolt Hpassing between the end of the segment F and the guide-roll G As the carB moves downward the rolls I at the bottom of the car strike the curvedends G of the levers G, depressing theminto the position shown in theupper portion of Fig. 1, swinging the roll around the segment F, andcausing the chain II to be wound upon-the segment F, wlth the chainpassing over the rolls G2 and G to to the hatch E. By this arrangementthe limited angular movement of the lever G takes up enough of the chainH to raise the hatch E from a horizontal to a vertical position. Uponthe sides of the elevator-car B are the metal strips J, which rubagainst the levers G as the car descends, holding the hatches openduring thepassage of the car.

The car B moves upon ways formed by the vertical guide-plates K, whichare cut away above the floor, forming a recess to receive the hatches Ewhen raised to a vertical position, and to the under side of the hatchesE are attached guide-strips K, in alignment with the verticalguideplates K when the hatches are raised. The guide-plates K extendabove the floor a short distance at each of the hatches, which areformed with a mortise L to receive the projecting ends of theguide-plates when the hatches are closed, and the ends of theguide-plates K projecting through the floor are provided with notches aand shoulders I), forming a tongue 0, which slightly overlaps the tonguecl, similarly formed upon the lower end of the guide-strip K, when thehatches are raised, bringing the shoulder 12 opposite the end of thetongue cl, so as to support the hatches from being pushed downward incase the hinges E become broken. \Vhen the hatches are closed, they fallover the ends of the guide-plates K, bringing the tongue cl into thenotches a. In Fig.4 I have shown a modified form of the guide-plates Kand strips K, which consists in forming a series of opposing steps, thesteps e upon the lower end of the strips K, when the hatches are raised,resting upon the steps f, formed upon the guide-plates K.

I am aware that it is not new to provide the guide-posts of an elevatorwith recesses to receive a lunged hatch, which carries upon its underside a guide-strip. Neither is it new to pivot a bell-crank lever uponthe guide-posts, having one arm connected by a link with the hingedhatch and the opposite arm placed in the path of the moving car. I

therefore claim neither of these features, broadly.

WVhat I claim as my invention, and desire to secure by Letters Patent,is-- 1. In an elevator, the combination, with a hinged hatch, of apivoted lever G, a stationary arc F, and a flexible connection H,attached at one end to the hatch and at the opposite end to thestationary arc F and lying in the path of the vibrating lever, so as tobe wound upon the stationary are as the lever is actuated by the movingcar, substantially as described.

2. In an elevator, the combination, with a hinged hatch-door, of astationary arc F and pivoted lever G, carrying rolls Gr Gianda flexibleconnection with one end attached to the hinged hatch and the oppositeend attached to a fixed support and arranged in the plane of thestationary arc F and the rolls G G so as to be wound thereon by theangular movement of the pivoted lever, substantially as described.

3. In an elevator, the combination, with the ways K, provided. with thenotches a and b, of hinged hatches E, and guide-strips K, attached tothe under side of the hinged hatches and notched to form the tongues cl,arranged to engage the notch a when the hatch is closed and form anopposing surface to the notch b when the hatch is opened, substantiallyas described.

Dated at Worcester, in the county of \Vorcester, this 1st day ofOctober, 1891.

JOHN A. DEAN. Witnesses:

RUFUS B. FOWLER, EMMA Knsrnn.

